Ключевые слова: aerospace, alien, arrow, astronaut, astronomy, book, calm, classroom, college, creativity, desk, drawing, dream, education, elementary, exam, exhausted, fantastic, fatigue, female, future, glasses, history, knowledge, learning, lesson, master, mathematic, orbit, relax, repose, school, science, shuttle, sitting, sketch, sleep, space, statistics, stats, stress, stressed, student, study, teach, teacher, tired, universe, university, work,